1/25 as a percentage is 4.00%. This small number shows up often when you need to work with tiny parts of a whole, like a tiny discount or a fraction of a class.
In everyday life you might see 1/25 when a teacher grades a test and gives 1 point out of 25 possible, or when a recipe calls for 1 cup of an ingredient out of 25 cups total. Saying it as 4.00% makes it easier to compare with other percentages you’re used to seeing.
Remember that 1/25 and 4.00% mean exactly the same amount. Whenever you spot the fraction, you can quickly think of it as four percent of the whole.